Dec 17 19:18:54.003 INFO checking mplanchard/combinations against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:18:54.003 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/mplanchard/combinations:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:18:54.464 INFO [stdout] a70222a325c7e917d00370a78920402958fdc95cb375d34891dfba3ca17dafca
Dec 17 19:18:54.470 INFO running `"docker" "start" "-a" "a70222a325c7e917d00370a78920402958fdc95cb375d34891dfba3ca17dafca"`
Dec 17 19:18:56.492 INFO [stderr]     Checking combinations v0.1.0 (/opt/crater/workdir)
Dec 17 19:18:56.776 INFO [stderr] warning: unused import: `std::slice`
Dec 17 19:18:56.776 INFO [stderr]  --> src/main.rs:6:5
Dec 17 19:18:56.776 INFO [stderr]   |
Dec 17 19:18:56.776 INFO [stderr] 6 | use std::slice;
Dec 17 19:18:56.776 INFO [stderr]   |     ^^^^^^^^^^
Dec 17 19:18:56.776 INFO [stderr]   |
Dec 17 19:18:56.776 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:18:56.776 INFO [stderr] 
Dec 17 19:18:56.800 INFO [stderr] warning: unused import: `std::slice`
Dec 17 19:18:56.800 INFO [stderr]  --> src/main.rs:6:5
Dec 17 19:18:56.800 INFO [stderr]   |
Dec 17 19:18:56.800 INFO [stderr] 6 | use std::slice;
Dec 17 19:18:56.800 INFO [stderr]   |     ^^^^^^^^^^
Dec 17 19:18:56.800 INFO [stderr]   |
Dec 17 19:18:56.800 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:18:56.800 INFO [stderr] 
Dec 17 19:18:56.946 INFO [stderr] warning: unused variable: `slice_one`
Dec 17 19:18:56.946 INFO [stderr]    --> src/main.rs:123:9
Dec 17 19:18:56.946 INFO [stderr]     |
Dec 17 19:18:56.946 INFO [stderr] 123 |     let slice_one: &[i32] = &[1, 2, 3, 4, 5];
Dec 17 19:18:56.946 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_slice_one` instead
Dec 17 19:18:56.946 INFO [stderr]     |
Dec 17 19:18:56.946 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 19:18:56.946 INFO [stderr] 
Dec 17 19:18:56.946 INFO [stderr] warning: unused variable: `slice_two`
Dec 17 19:18:56.946 INFO [stderr]    --> src/main.rs:124:9
Dec 17 19:18:56.946 INFO [stderr]     |
Dec 17 19:18:56.946 INFO [stderr] 124 |     let slice_two: &[i32] = &[3, 4];
Dec 17 19:18:56.946 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_slice_two` instead
Dec 17 19:18:56.946 INFO [stderr] 
Dec 17 19:18:56.969 INFO [stderr] warning: unused variable: `slice_one`
Dec 17 19:18:56.969 INFO [stderr]    --> src/main.rs:123:9
Dec 17 19:18:56.969 INFO [stderr]     |
Dec 17 19:18:56.969 INFO [stderr] 123 |     let slice_one: &[i32] = &[1, 2, 3, 4, 5];
Dec 17 19:18:56.969 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_slice_one` instead
Dec 17 19:18:56.969 INFO [stderr]     |
Dec 17 19:18:56.969 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 19:18:56.969 INFO [stderr] 
Dec 17 19:18:56.969 INFO [stderr] warning: unused variable: `slice_two`
Dec 17 19:18:56.969 INFO [stderr]    --> src/main.rs:124:9
Dec 17 19:18:56.969 INFO [stderr]     |
Dec 17 19:18:56.969 INFO [stderr] 124 |     let slice_two: &[i32] = &[3, 4];
Dec 17 19:18:56.969 INFO [stderr]     |         ^^^^^^^^^ help: consider using `_slice_two` instead
Dec 17 19:18:56.969 INFO [stderr] 
Dec 17 19:18:56.992 INFO [stderr] warning: function is never used: `num_combinations`
Dec 17 19:18:56.992 INFO [stderr]   --> src/main.rs:19:1
Dec 17 19:18:56.992 INFO [stderr]    |
Dec 17 19:18:56.992 INFO [stderr] 19 | fn num_combinations(num_items: u64, take: u64) -> BigUint {
Dec 17 19:18:56.992 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:18:56.992 INFO [stderr] 
Dec 17 19:18:56.992 INFO [stderr] warning: function is never used: `print`
Dec 17 19:18:56.992 INFO [stderr]   --> src/main.rs:62:1
Dec 17 19:18:56.992 INFO [stderr]    |
Dec 17 19:18:56.992 INFO [stderr] 62 | fn print<T: Iterator + std::fmt::Debug>(thing: T) -> T{
Dec 17 19:18:56.992 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:18:56.992 INFO [stderr] 
Dec 17 19:18:57.048 INFO [stderr] warning: function is never used: `num_combinations`
Dec 17 19:18:57.048 INFO [stderr]   --> src/main.rs:19:1
Dec 17 19:18:57.048 INFO [stderr]    |
Dec 17 19:18:57.048 INFO [stderr] 19 | fn num_combinations(num_items: u64, take: u64) -> BigUint {
Dec 17 19:18:57.048 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:18:57.048 INFO [stderr] 
Dec 17 19:18:57.048 INFO [stderr] warning: function is never used: `print`
Dec 17 19:18:57.048 INFO [stderr]   --> src/main.rs:62:1
Dec 17 19:18:57.048 INFO [stderr]    |
Dec 17 19:18:57.048 INFO [stderr] 62 | fn print<T: Iterator + std::fmt::Debug>(thing: T) -> T{
Dec 17 19:18:57.048 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:18:57.048 INFO [stderr] 
Dec 17 19:18:57.100 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
Dec 17 19:18:57.895 INFO running `"docker" "inspect" "a70222a325c7e917d00370a78920402958fdc95cb375d34891dfba3ca17dafca"`
Dec 17 19:18:58.054 INFO running `"docker" "rm" "-f" "a70222a325c7e917d00370a78920402958fdc95cb375d34891dfba3ca17dafca"`
Dec 17 19:18:58.232 INFO [stdout] a70222a325c7e917d00370a78920402958fdc95cb375d34891dfba3ca17dafca